Activity Stream

did u look at the old pumps see why they failed ? if u still have one can look in the inlet and try to turn the impeller, if that is ceased its prob...

The 2 tunes you posted are for an auto and a manual, its why the OS is different. Looking at the shift tables on the second OS and you will see...

Hmm, this is interesting. So it must definitely be due to a mismatch in rpm & speed that the PCM senses. I have the final drive ratio stock, VSS...

What's the inlet filter/sock? How far off the bottom of the tank is it? Store bought/premade pump hanger/sending unit or fabricobbled? Is the tank...

Mode vs Airflow has to do with the PI controller for O2 drive. https://forum.hptuners.com/showthread.php?106787-Airflow-mode-LTFT-histogram ...

You don't have to write entire to disable VATS on P01 and P59s. And VSS has nothing to do with VATS. You must be thinking about Column Lock on Vettes.

Timed on a stand. #1 tdc camshaft pin at 12 and also used the marks on chain, phaser and crank gear. After rotated 360 to verify cam was back at 12...

I have never just put in non DOD lifters with a DOD cam. At the minimum should check lifter preload for pushrod length. Maybe others have tried it...

Hello all, names Rudy. Had alot of cruzes and sonics, tuned greatly by Trifecta Performance. But im ready to start tuning myself! Took some HP...

Hmm... I don't get it. I can't imagine being at WOT, letting off the gas, and it downshifts.. If it downshifted, whatever your RPMS are @WOT, it...

My money says it is off one or more teeth Did you check the centerline before buttoning it up?

do you have the original pcm?? powerstrokecustoms can help you with everything you need and with using the original pcm.

if you have nexiq and calterm you can flash a stock calibration back in it. just need the number off the side of the ecu.

POWERSTROKECUSTOMS.COM would be your go to

That is not a professional tune lol. Why is the idle so high? Dial in the VE then MAF, lower timing a few degrees. The idle over/under spark is too...

Yes. Everything was stock except the LS7 lifters and push rods.

No, I meant downshift. The move from 1 to 2 (upshift) is smooth as silk even under WOT. If I abort WOT to hit the brakes quickly (because I need to...

I thought the old way was 90% to 99% on the min across the board depending on how harsh you would want and 100% on the max?

Stock cam, heads, inectors, fuel pump, ECM? You stated you changed those?

Did you "write entire"? On the PO1's I have, when the VATS is active the car will start/run, just won't run after the VSS reaches the set point.

I mean for Ed's sake, you could try it to see what happened, but I am sure there is a lot more TCC tables in the bowels of the TCM. Hjtrbo went to...

I'm thinking you mean 1-2 upshift? If so, I notice it some as well since I raised the 1-2 shift schedule.. I've been wondering if adjusting...

Gotcha, guess your high speed lock is different than my tahoe. I did find a brake pedal channel under systems -> brakes -> brake pedal It's a...

I don't know what activates coast mode but that looks like what is happening here. Looks like it's unlocking every time it's going to coast. Fairly...

I have an 08 with the same problem. In my case i found the reduced power would set after 5 minutes, regardless of just idling, or driving. I did a...

Glad I can help and that you're enjoying your build. I think a little more time on VE should be done.